DELTA 1 DEB, 21275

Orbit data source: Space-Track

DELTA 1 DEB, 21275 is space debris in SSO originally from a launch on Thu, 12 Jun 1975 UTC launched from the Air Force Western Test Range (AFWTR). Debris objects in space refer to the collection of defunct objects orbiting the Earth. Examples of debris include non-operational satellites, rocket bodies, and fragments generated from explosions, collisions, or faulty payload assembly.

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Iframe URL

https://www.satcat.com/sats-embedded/21275?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21275, 1975-052L

Orbit

SSO

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

Unknown

Mission

Spacecraft

Bus & Motor

Unknown

Mass

Unknown

Launch date (UTC)

1975-06-12 (51 years ago)

Launch vehicle

Unknown

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown shape, 0.2 m

Radar Cross Section

Small (<0.1 m²)

Expand to show TLE details & history
Last TLE update: 8 hours ago

TLE from 8 hours ago

0 DELTA 1 DEB
1 21275U 75052L   26082.50642463  .00000091  00000-0  20688-3 0  9991
2 21275  99.8792 350.6752 0034305  31.2543 142.0950 13.51889998720690

Epoch: 2026-03-23T12:09Z

TLE epoch observation values (Epoch: 2026-03-23T12:09:15.088Z)

Latitude

6.24016°

Longitude

168.45042°

Altitude

1,087.687 km

Speed

7.299 km/s

True Right ascension

11h 27m 02s

True Declination

6° 12' 17"

Sunlit

Object was in full shadow at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

01:22:47

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,088.147 km

Perigee altitude

1,037.096 km

Semi-major axis

7,440.758 km

Eccentricity

0.00343

Inclination

99.8792°

RAAN

350.6752°

Arg. of periapsis

31.2543°

True anomaly

142.33569°

Mean anomaly

142.095°

Eccentric anomaly

142.21543°

Mean motion

3.38156 °/min

Orbital period

106.46 mins

BSTAR

0.00020688

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Other satellites on launch #52 in the year 1975 (1975-06-12 UTC)

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DELTA 1 DEB Visibility forecast

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Span	Click to sort rows by Start time (UTC) header in descending order	Start Az.	Max El. time (UTC)	Max El. Az.	Max El.	End time (UTC)	End Az.
10 mins	2026-03-24 05:40:56.106Z	43.34° NE	2026-03-24 05:45:56.106Z	101.991° ESE	25.327°	2026-03-24 05:50:56.106Z	152.669° SSE
10 mins	2026-03-24 07:25:56.106Z	358.616° N	2026-03-24 07:30:56.106Z	284.567° WNW	36.589°	2026-03-24 07:35:56.106Z	223.443° SW
4 mins	2026-03-24 15:55:56.106Z	73.277° E	2026-03-24 15:57:56.106Z	52.826° ENE	14.074°	2026-03-24 15:59:56.106Z	32.966° NE
11 mins	2026-03-24 17:36:56.106Z	160.089° S	2026-03-24 17:41:56.106Z	29.57° NE	44.756°	2026-03-24 17:47:56.106Z	346.408° N
4 mins	2026-03-24 19:25:56.106Z	254.788° W	2026-03-24 19:26:56.106Z	264.895° W	13.625°	2026-03-24 19:29:56.106Z	294.664° NW

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Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

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Check out DELTA 1 DEB, 21275 on other resources

View DELTA 1 DEB, 21275 on Heavens-Above

View DELTA 1 DEB, 21275 on Keep Track

View DELTA 1 DEB, 21275 on Celestrak

View DELTA 1 DEB, 21275 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

DELTA 1 DEB, 21275

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 8 hours ago

TLE from 8 hours ago

TLE epoch observation values (Epoch: 2026-03-23T12:09:15.088Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #52 in the year 1975 (1975-06-12 UTC)

DELTA 1 DEB Visibility forecast

Co-orbital & Co-planar RSOs

Check out DELTA 1 DEB, 21275 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 8 hours ago